Hibam thompson



H. THOMPSON. Making Spikes.

Patented April 9, 1867,

nttrh I'll-RAM THO MPSON, 01 WORCESTER, MASSAGH'USETTS,

Letters Patent No. 68,766, and April 9, 1867.

- IMPROVED MACHINE FOB SHAPING AND HEADING BARS OF METAL.

fiilgi fidntnlc reform in in flgrse iteitcts intent imt stating part at lip: time.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, HIR-AM TIIoMPSON, of Worcester, in the county of Worcester, and State of Massachusetts, have invented new and useful improvements in Machinery for Shaping and Heading Bars of Metal; and I do hcrch declare, that the followin is a full clear and exact descri tion of the construction and o eration of the Y c v 7 P P same, reference being had to the annexed drawings, making a part of this specification, the same letters in each figure having reference to the same part.

Figure 1 is a perspective view. I v Figure 2 is a sectional view of a portion of the wheel A at the seat of the joint 6, with the covering l'elTlOWQd so as to show the adjustable seat. I

Figure 3 is an external view of the side of the wheel A and cam F, with the stand D removed so as to show the shape of the cam F, and also a slot in the wheel A, through which one of the lifting straps Z is seen, and in which the lifting bar 11 slides.

Figure 4 is a sectional view of the wheel A, with the section E removed so as to show the internal construction of the machine.

O isthe frame of the machine, Ais a continuous rotary wheel, in which are constructed presses,by means of which she bars of metal are pressed'into the form desired.

These drawings represent an arrangement for manufacturing corrugated railroad-spikes. One press only is shown here, which is constructed as follows: i

Z: is a knuckle-joint attached to the wheel Aat u, ajaw extending from the'circumference of the wheel A to and encircling the shaft S, on which it swings, giving-it a motion in the direction of the circumference of the wheel A. To this jaw is attached the other end of the joint 6 at a. f is one part of the die which gives form to the bar of metal 12, which is fastened to the reciprocating jaw a by screws or bolts, and reciprocates with it. e is the other part of the forming die, made fast to the wheel A. B is a continuous rotary wheelrevolvingin a direction opposite to that of the wheel A. The joint I) at the end u has an adjustahle seat, c, which has a wedge, 0, back of it, adjusted by the screws 1 and 2. It is clearly shown in fig. 2 that hyloosening the screw and screwing in thescrew 1, the wedgeo is forced towards 1, thus forcing, the seat 0 towards the joint 6, overcoming the wear of the machine in that direction.

To operate the machine, theironheing cut the desired length and heated, the machine is set in motion when the press-gets into the position shown in fig. 1, the operator places the hcatediron in the cavity between z'e, fig. 1. When the wheel B comes in, contact with the joint 6, the joint Z is forced down into the position shown in fig. 4, which carriesf in the direction of the circumference of the wheel A towards the stationary die a; this corrugatcs and points the bar. When the projecting end of the her thus held fast in the press comes in contact with the face of the wheel 13, it is upset and forced into the cavity of thedie f-e, which forms the head. When the joint Z1 is pressed down, the lifting bar 11 takes the position shown in figs. 3 and 4. This bar is connected with thcjoint b by thelifting straps 01,-so that as the wheel A travels it carries the lifting bar 11 with it along the stationary cams F, which are fastened to the stand I) and to the frame 0, which cams F carry the lifting bar 11 towards the circumference of the wheel A, so that when the bar 11 reaches 96, thejoint b is thrown out, bringing back the die f with it, relieving the bar n, when it drops out a complete corrugated railroad spike, or belt, or whatever form the die is adapted to give it. When the press gets around again into the position shown in fig. 1, it is ready to receive another hat and put it through the same process,

That which I claim as my invention, and which I desire to secure by Letters Patent, is 1. The arrangement for giving motion to the jaw a and dief of the knuckle-joint b and wheel 13, as described 2. The combination, with the revolving wheel A, jaw a, and die f, of the wedge o and set-screws 1 and 2,

said parts being constructed and arranged for operation substantiallyas and for the purposes set forth.

' HIRAM THOMPSON.

' Witnesses:

. LEONARD S'rnnnrnn,

CHAS. A. HOLBROOK. 

